US2026074760A1PendingUtilityA1
Channel state information reporting method, apparatus, and readable storage medium
Est. expiryFeb 3, 2043(~16.5 yrs left)· nominal 20-yr term from priority
H04W 72/0453H04L 27/261H04B 7/0456H04W 72/23H04W 72/563H04B 7/024H04B 7/06H04L 5/0048H04L 5/0035H04B 7/0626H04L 5/0064
63
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Claims
Abstract
This application relates to the field of communication technologies, and in particular, to a channel state information reporting method, an apparatus, and a readable storage medium. The method includes: determining indication information of M coefficients based on reference signals on N reference signal resources, where priorities of the M coefficients are determined based on priorities of the N reference signal resources, and the M coefficients are used to determine a precoding matrix; and sending first information, where the first information includes indication information of K coefficients, and the K coefficients are determined from the M coefficients based on the priorities of the M coefficients. It is ensured as much as possible that more important information can be preferentially reported, to reduce a performance loss of a communication system.
Claims
exact text as granted — not AI-modified1 . A channel state information reporting method, wherein the method comprises:
receiving reference signals on N reference signal resources; determining indication information of M coefficients based on the reference signals on the N reference signal resources, wherein priorities of the M coefficients are determined based on priorities of the N reference signal resources, both M and N are integers greater than 1, and the M coefficients are used to determine a precoding matrix; and sending first information, wherein the first information comprises indication information of K coefficients, the K coefficients are determined from the M coefficients based on the priorities of the M coefficients, and K is a positive integer less than or equal to M.
2 . The method according to claim 1 , wherein the priorities of the M coefficients are further determined based on one or more of the following: a transmission layer sequence number, a spatial domain basis vector sequence number, a reference signal port sequence number, or a frequency domain basis vector sequence number.
3 . The method according to claim 1 , wherein a priority of a coefficient associated with a spatial domain basis vector or a reference signal port that corresponds to any one of the N reference signal resources is determined according to any one or more items of a first preset rule below:
based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of a coefficient associated with any spatial domain basis vector corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with any spatial domain basis vector corresponding to the n 2 th reference signal resource; or a priority of a coefficient associated with any reference signal port corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with any reference signal port corresponding to the n 2 th reference signal resource; or based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of a coefficient associated with an i th spatial domain basis vector corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with an i th spatial domain basis vector with an identical sequence number that corresponds to the n 2 th reference signal resource; or a priority of a coefficient associated with an i th reference signal port corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with an i th reference signal port that is with an identical sequence number and that corresponds to the n 2 th reference signal resource, wherein i represents the sequence number of the spatial domain basis vector or the reference signal port.
4 . The method according to claim 1 , wherein the priorities of the M coefficients satisfy:
Pri
(
l
,
i
,
f
,
n
)
=
2
L
max
·
X
·
υ
·
π
(
f
)
+
v
·
φ
(
i
,
n
)
+
l
,
wherein l represents the transmission layer sequence number, and l is set to 1, 2, . . . , v; v represents a quantity of transmission layers; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents a quantity of spatial domain basis vectors corresponding to an n th reference signal resource; f represents the frequency domain basis vector sequence number, and f is set to 0, 1, . . . , M v −1; M v represents a quantity of frequency domain basis vectors; n represents a sequence numbers of a reference signal resource in the N reference signal resources; φ(i, n) represents a priority of a coefficient set associated with an i th spatial domain basis vector corresponding to the n th reference signal resource, and satisfies φ(i, n)<2L max ·X; X is an integer greater than or equal to N; L max is greater than or equal to a maximum value of quantities of spatial domain basis vectors respectively corresponding to the N reference signal resources; π(f) represents a first remapping function, which is used to remap a sequence number or an index of a frequency domain basis vector selected for an l th transmission layer and the n th reference signal resource; and Pri(l, i, f, n) represents a priority of a coefficient corresponding to a given combination of the l th transmission layer, the n th reference signal resource, the i th spatial domain basis vector, and an f th frequency domain basis vector.
5 . The method according to claim 4 , wherein φ(i, n) satisfies any one of the following formulas:
φ(i, n)=2L max ·G(n)+i, wherein G(n) represents a priority ranking of the n th reference signal resource in the N reference signal resources; L max is greater than or equal to the maximum value of the quantities of spatial domain basis vectors respectively corresponding to the N reference signal resources; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; and L n represents the quantity of spatial domain basis vectors corresponding to the n th reference signal resource;
φ(i, n)=N·φ n (i)+G(n), wherein G(n) represents a priority ranking of the n th reference signal resource in the N reference signal resources; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents the quantity of spatial domain basis vectors corresponding to the n th reference signal resource; and φ n (i)=i or φ n (i)=i+2L max −2L n , wherein φ n (i) represents a second remapping function, which is used to remap the spatial domain basis vector sequence number; or
φ
(
i
,
n
)
=
N
·
a
max
·
⌊
i
a
n
⌋
+
G
(
n
)
·
a
max
+
i
mod
a
n
,
wherein a n is a positive integer greater than or equal to 1 and is in direct proportion to a value of L n , and a greatest common divisor of all a n is 1; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents the quantity of spatial domain basis vectors corresponding to the n th reference signal resource; and a max is a maximum value of all a n .
6 . The method according to claim 1 , wherein based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of any coefficient associated with the n 1 th reference signal resource is higher than a priority of any coefficient associated with the n 2 th reference signal resource.
7 . The method according to claim 1 , wherein the priorities of the M coefficients satisfy:
Pri
(
l
,
i
,
f
,
n
)
=
2
L
max
·
υ
·
Y
·
G
(
n
)
+
2
L
max
·
υ
·
π
(
f
)
+
υ
·
i
+
l
,
wherein l represents the transmission layer sequence number, and l is set to 1, 2, . . . , v; v represents a quantity of transmission layers; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents a quantity of spatial domain basis vectors corresponding to an n th reference signal resource; f represents the frequency domain basis vector sequence number, and f is set to 0, 1, . . . , M v −1; M v represents a quantity of frequency domain basis vectors; n represents a sequence number of a reference signal resource in the N reference signal resources; G(n) represents a priority ranking of the n th reference signal resource in the N reference signal resources; L max is greater than or equal to a maximum value of quantities of spatial domain basis vectors respectively corresponding to the N reference signal resources; Y is an integer greater than or equal to M v , or Y is an integer greater than or equal to N 3 ; N 3 is a quantity of subbands or a quantity of frequency domain units; π(f) represents a first remapping function, which is used to remap a sequence number or an index of a frequency domain basis vector selected for an l th transmission layer and the n th reference signal resource; and Pri(l, i, f, n) represents a priority of a coefficient corresponding to a given combination of the l th transmission layer, the n th reference signal resource, an i h spatial domain basis vector, and an f th frequency domain basis vector.
8 . The method according to claim 4 , wherein π(f) satisfies any one of the following formulas:
π
(
f
)
=
f
;
π
(
f
)
=
min
(
2
·
k
3
,
l
,
n
(
f
)
,
2
·
(
N
3
-
k
3
,
l
,
n
(
f
)
)
-
1
)
,
wherein
k
3
,
l
,
n
(
f
)
=
(
k
3
,
l
,
n
(
f
)
-
k
3
,
l
,
n
*
(
f
l
*
)
)
mod
N
3
;
k
3
,
l
,
n
(
f
)
represents an index, in a frequency domain basis vector universal set, of the f th frequency domain basis vector of the n th reference signal resource corresponding to the l th transmission layer;
k
3
,
l
,
n
*
(
f
l
*
)
represents an original index of a frequency domain basis vector corresponding to a strongest coefficient in the N reference signal resources corresponding to the l th transmission layer;
f
l
*
represents a sequence number of the frequency domain basis vector corresponding to the strongest coefficient of the l th transmission layer; and n* represents a reference signal resource sequence number corresponding to the strongest coefficient of the l th transmission layer; or
π
(
f
)
=
min
(
2
·
k
3
,
l
,
n
(
f
)
,
2
·
(
N
3
-
k
3
,
l
,
n
(
f
)
)
-
1
)
,
wherein
k
3
,
l
,
n
(
f
)
=
(
k
3
,
l
,
n
(
f
)
-
k
3
,
l
,
n
(
f
l
,
n
*
)
)
mod
N
3
;
k
3
,
l
,
n
(
f
)
represents an index, in a frequency domain basis vector universal set, of the f th frequency domain basis vector of the n th reference signal resource corresponding to the l th transmission layer;
k
3
,
l
,
n
(
f
l
,
n
*
)
represents an original index of a frequency domain basis vector corresponding to a strongest coefficient of the n th reference signal resource corresponding to the l th transmission layer; and
f
l
,
n
*
represents a sequence number of the frequency domain basis vector corresponding to the strongest coefficient of the n th reference signal resource corresponding to the l th transmission layer.
9 . The method according to claim 4 , wherein a smaller value of Pri(l, i, f, n) indicates a higher priority of a coefficient corresponding to a given sequence number combination of the l th transmission layer, the n th reference signal resource, the i th spatial domain basis vector or reference signal port, and the f th frequency domain basis vector.
10 . The method according to claim 1 , wherein the priorities of the N reference signal resources are determined according to any one or more items of a second preset rule below:
the reference signal resource corresponding to a larger quantity of spatial domain basis vectors or the reference signal resource for which a larger quantity of reference signal ports is selected, has a higher priority; the reference signal resource corresponding to a larger amplitude of a strongest coefficient has a higher priority; the reference signal resource corresponding to a higher signal strength of a reference signal has a higher priority; or the reference signal resource corresponding to a smaller sequence number of the reference signal resource has a higher priority.
11 . The method according to claim 5 , wherein a smaller value of G(n) indicates a higher priority of the n th reference signal resource.
12 . A channel state information reporting method, wherein the method comprises:
sending a reference signal on a reference signal resource; and receiving first information, wherein the first information comprises indication information of K coefficients, the K coefficients are determined from M coefficients based on priorities of the M coefficients, the reference signal resource is any one of N reference signal resources, both M and N are integers greater than 1, K is a positive integer less than or equal to M, the priorities of the M coefficients are determined based on priorities of the N reference signal resources, and the M coefficients are used to determine a precoding matrix.
13 . The method according to claim 12 , wherein the method further comprises:
determining the precoding matrix based on the indication information of the K coefficients that is comprised in the first information.
14 . The method according to claim 12 , wherein the priorities of the M coefficients are further determined based on one or more of the following: a transmission layer sequence number, a spatial domain basis vector sequence number, a reference signal port sequence number, or a frequency domain basis vector sequence number.
15 . The method according to claim 12 , wherein a priority of a coefficient associated with a spatial domain basis vector or a reference signal port that corresponds to any one of the N reference signal resources is determined according to any one or more items of the following first preset rule:
based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of a coefficient associated with any spatial domain basis vector corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with any spatial domain basis vector corresponding to the n 2 th reference signal resource; or a priority of a coefficient associated with any reference signal port corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with any reference signal port corresponding to the n 2 th reference signal resource; or based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of a coefficient associated with an i th spatial domain basis vector corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with an i th spatial domain basis vector that is with an identical sequence number and that corresponds to the n 2 th reference signal resource; or a priority of a coefficient associated with an i th reference signal port corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with an i th reference signal port with an identical sequence number that corresponds to the n 2 th reference signal resource, wherein i represents the sequence number of the spatial domain basis vector or the reference signal port.
16 . The method according to claim 12 , wherein the priorities of the M coefficients satisfy:
Pri
(
l
,
i
,
f
,
n
)
=
2
L
max
·
X
·
υ
·
π
(
f
)
+
v
·
φ
(
i
,
n
)
+
l
,
wherein l represents the transmission layer sequence number, and l is set to 1, 2, . . . , v; v represents a quantity of transmission layers; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents a quantity of spatial domain basis vectors corresponding to an n th reference signal resource; f represents the frequency domain basis vector sequence number, and f is set to 0, 1, . . . , M v −1; M v represents a quantity of frequency domain basis vectors; n represents a sequence numbers of a reference signal resource in the N reference signal resources; φ(i, n) represents a priority of a coefficient set associated with an i th spatial domain basis vector corresponding to the n th reference signal resource, and satisfies φ(i, n)<2L max ·X; X is an integer greater than or equal to N; L max is greater than or equal to a maximum value of quantities of spatial domain basis vectors respectively corresponding to the N reference signal resources; π(f) represents a first remapping function, which is used to remap a sequence number or an index of a frequency domain basis vector selected for an l th transmission layer and the n th reference signal resource; and Pri(l, i, f, n) represents a priority of a coefficient corresponding to a given combination of the l th transmission layer, the n th reference signal resource, the i th spatial domain basis vector, and an f th frequency domain basis vector.
17 . A communication apparatus, comprising:
a processor coupled to a memory storing instructions, wherein the processor is configured to execute the instructions, to cause the communication apparatus to: receive reference signals on N reference signal resources; determine indication information of M coefficients based on the reference signals on the N reference signal resources, wherein priorities of the M coefficients are determined based on priorities of the N reference signal resources, both M and N are integers greater than 1, and the M coefficients are used to determine a precoding matrix; and send first information, wherein the first information comprises indication information of K coefficients, the K coefficients are determined from the M coefficients based on the priorities of the M coefficients, and K is a positive integer less than or equal to M.
18 . The apparatus according to claim 17 , wherein the priorities of the M coefficients are further determined based on one or more of the following: a transmission layer sequence number, a spatial domain basis vector sequence number, a reference signal port sequence number, and a frequency domain basis vector sequence number.
19 . The apparatus according to claim 17 , wherein a priority of a coefficient associated with a spatial domain basis vector or a reference signal port that corresponds to any one of the N reference signal resources is determined according to any one or more items of the following first preset rule:
based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of a coefficient associated with any spatial domain basis vector corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with any spatial domain basis vector corresponding to the n 2 th reference signal resource; or a priority of a coefficient associated with any reference signal port corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with any reference signal port corresponding to the n 2 th reference signal resource; or based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of a coefficient associated with an i th spatial domain basis vector corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with an i th spatial domain basis vector that is with the same sequence number and that corresponds to the n 2 th reference signal resource; or a priority of a coefficient associated with an i th reference signal port corresponding to the n 1 th reference signal resource being higher than a priority of a coefficient associated with an i th reference signal port with the same sequence number that corresponds to the n 2 th reference signal resource, wherein i represents the sequence number of the spatial domain basis vector or the reference signal port.
20 . The apparatus according to claim 17 , wherein the priorities of the M coefficients satisfy:
Pri
(
l
,
i
,
f
,
n
)
=
2
L
max
·
X
·
υ
·
π
(
f
)
+
v
·
φ
(
i
,
n
)
+
l
,
wherein l represents the transmission layer sequence number, and l is set to 1, 2, . . . , v; v represents a quantity of transmission layers; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents a quantity of spatial domain basis vectors corresponding to an n th reference signal resource; f represents the frequency domain basis vector sequence number, and f is set to 0, 1, . . . , M v −1; M v represents a quantity of frequency domain basis vectors; n represents a sequence number of a reference signal resource in the N reference signal resources; φ(i, n) represents a priority of a coefficient set associated with an i th spatial domain basis vector corresponding to the n th reference signal resource, and satisfies φ(i, n)<2L max ·X; X is an integer greater than or equal to N; L max is greater than or equal to a maximum value of quantities of spatial domain basis vectors respectively corresponding to the N reference signal resources; π(f) represents a first remapping function, which is used to remap a sequence number or an index of a frequency domain basis vector selected for the l th transmission layer and the n th reference signal resource; and Pri(l, i, f, n) represents a priority of a coefficient corresponding to a given combination of the l th transmission layer, the n th reference signal resource, the i th spatial domain basis vector, and the f th frequency domain basis vector.
21 . The apparatus according to claim 20 , wherein φ(i, n) satisfies any one of the following formulas:
φ(i, n)=2L max ·G(n)+i, wherein G(n) represents a priority ranking of the n th reference signal resource in the N reference signal resources; L max is greater than or equal to the maximum value of the quantities of spatial domain basis vectors respectively corresponding to the N reference signal resources; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; and L n represents the quantity of spatial domain basis vectors corresponding to the n th reference signal resource;
φ(i, n)=N·φ n (i)+G(n), wherein G(n) represents a priority ranking of the n th reference signal resource in the N reference signal resources; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents the quantity of spatial domain basis vectors corresponding to the n th reference signal resource; and φ n (i)=i or φ n (i)=i+2L max −2L n , wherein φ n (i) represents a second remapping function, which is used to remap the spatial domain basis vector sequence number; or
φ
(
i
,
n
)
=
N
·
a
max
·
⌊
i
a
n
⌋
+
G
(
n
)
·
a
max
+
i
mod
a
n
,
wherein a n is a positive integer greater than or equal to 1 and is in direct proportion to a value of L n , and a greatest common divisor of all a n is 1; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents the quantity of spatial domain basis vectors corresponding to the n th reference signal resource; and a max is a maximum value of all a n .
22 . The apparatus according to claim 17 , wherein based on a priority of an n 1 th reference signal resource in the N reference signal resources being higher than a priority of an n 2 th reference signal resource in the N reference signal resources, a priority of any coefficient associated with the n 1 th reference signal resource is higher than a priority of any coefficient associated with the n 2 th reference signal resource.
23 . The apparatus according to claim 17 , wherein the priorities of the M coefficients satisfy:
Pri
(
l
,
i
,
f
,
n
)
=
2
L
max
·
υ
·
Y
·
G
(
n
)
+
2
L
max
·
υ
·
π
(
f
)
+
υ
·
i
+
l
,
wherein l represents the transmission layer sequence number, and l is set to 1, 2, . . . , v; v represents a quantity of transmission layers; i represents the spatial domain basis vector sequence number, and i is set to 0, 1, . . . , 2L n −1; L n represents a quantity of spatial domain basis vectors corresponding to an n th reference signal resource; f represents the frequency domain basis vector sequence number, and f is set to 0, 1, . . . , M v −1; M v represents a quantity of frequency domain basis vectors; n represents a sequence number of a reference signal resource in the N reference signal resources; G(n) represents a priority ranking of the n th reference signal resource in the N reference signal resources; L max is greater than or equal to a maximum value of quantities of spatial domain basis vectors respectively corresponding to the N reference signal resources; Y is an integer greater than or equal to M v , or Y is an integer greater than or equal to N 3 ; N 3 is a quantity of subbands or a quantity of frequency domain units; π(f) represents a first remapping function, which is used to remap a sequence number or an index of a frequency domain basis vector selected for the l th transmission layer and the n th reference signal resource; and Pri(l, i, f, n) represents a priority of a coefficient corresponding to a given combination of the l th transmission layer, the n th reference signal resource, the i th spatial domain basis vector, and the f th frequency domain basis vector.
24 . The apparatus according to claim 20 , wherein π(f) satisfies any one of the following formulas:
π
(
f
)
=
f
;
π
(
f
)
=
min
(
2
·
k
3
,
l
,
n
(
f
)
,
2
·
(
N
3
-
k
3
,
l
,
n
(
f
)
)
-
1
)
,
wherein
k
3
,
l
,
n
(
f
)
=
(
k
3
,
l
,
n
(
f
)
-
k
3
,
l
,
n
*
(
f
l
*
)
)
mod
N
3
;
k
3
,
l
,
n
(
f
)
represents an index, in a frequency domain basis vector universal set, of the f th frequency domain basis vector of the n th reference signal resource corresponding to the l th transmission layer;
k
3
,
l
,
n
*
(
f
l
*
)
represents an original index of a frequency domain basis vector corresponding to a strongest coefficient in the N reference signal resources corresponding to the l th transmission layer; f l * represents a sequence number of a frequency domain basis vector corresponding to the strongest coefficient of the l th transmission layer; and n* represents a reference signal resource sequence number corresponding to the strongest coefficient of the l th transmission layer; or
π
(
f
)
=
min
(
2
·
k
3
,
l
,
n
(
f
)
,
2
·
(
N
3
-
k
3
,
l
,
n
(
f
)
)
-
1
)
,
wherein
k
3
,
l
,
n
(
f
)
=
(
k
3
,
l
,
n
(
f
)
-
k
3
,
l
,
n
(
f
l
,
n
*
)
)
mod
N
3
;
k
3
,
l
,
n
(
f
)
represents an index, in a frequency domain basis vector universal set, of the f th frequency domain basis vector of the n th reference signal resource corresponding to the l th transmission layer;
k
3
,
l
,
n
(
f
l
,
n
*
)
represents an original index of a frequency domain basis vector corresponding to a strongest coefficient of the n th reference signal resource corresponding to the l th transmission layer; and
f
l
,
n
*
represents a sequence number of the frequency domain basis vector corresponding to the strongest coefficient of the n th reference signal resource corresponding to the l th transmission layer.
25 . The apparatus according to claim 20 , wherein a smaller value of Pri(l, i, f, n) indicates a higher priority of a coefficient corresponding to a given sequence number combination of the l th transmission layer, the n th reference signal resource, the i th spatial domain basis vector or reference signal port, and the f th frequency domain basis vector.
26 . The apparatus according to claim 17 , wherein the priorities of the N reference signal resources are determined according to any one or more items of a second preset rule below:
the reference signal resource corresponding to a larger quantity of spatial domain basis vectors or the reference signal resource for which a larger quantity of reference signal ports is selected, has a higher priority; the reference signal resource corresponding to a larger amplitude of a strongest coefficient has a higher priority; the reference signal resource corresponding to a higher signal strength of a reference signal has a higher priority; or the reference signal resource corresponding to a smaller sequence number of the reference signal resource has a higher priority.
27 . The apparatus according to claim 21 , wherein a smaller value of G(n) indicates a higher priority of the n th reference signal resource.
28 . A communication apparatus, comprising:
a processor coupled to a memory storing instructions, wherein the processor is configured to execute the instructions, to cause the communication apparatus to: generate a reference signal; send the reference signal on a reference signal resource; and receive first information, wherein the first information comprises indication information of K coefficients, the K coefficients are determined from M coefficients based on priorities of the M coefficients, the reference signal resource is any one of N reference signal resources, both M and N are integers greater than 1, K is a positive integer less than or equal to M, the priorities of the M coefficients are determined based on priorities of the N reference signal resources, and the M coefficients are used to determine a precoding matrix.
29 . The apparatus according to claim 28 , wherein the processing unit is further configured to determine the precoding matrix based on the indication information of the K coefficients that is comprised in the first information.
30 . The apparatus according to claim 28 , wherein the priorities of the M coefficients are further determined based on one or more of the following: a transmission layer sequence number, a spatial domain basis vector sequence number, a reference signal port sequence number, and a frequency domain basis vector sequence number.Join the waitlist — get patent alerts
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